Edge-lining machine



Sept. 8, 1953 H. v. scHwl-:lrzi-:R 2,651,282

EDGE-LINING MACHINE Filed Aug. 2l, 1947 y Sheets-Shee 2 o. l; 73 Q Avr i s W l .lo 95 O O I i 85 o o I 5 o L3 l O 55 L I L d l f 28 55 i 322i i 3 d 1J,

75 !l 54 I I 33 f l I 57 35 l i I 52 l o I 5o I 54/ r 59 l i l 5'/ U 38f I INVENTOR. f

/W/w l .5U/WE TZER H. v. scHwElTZER EDGRLINING MACHINE:

Sept'. 8,k 1953 4 Sheets-Sheet S5 Filed Aug. 2l, 194'? 9 3f: n lllllllllHllMUlnlHUUlhlHVH IIIIIIIII .Il u M u. I 3 n V 7 3; ZJ 5 L n Z 4. u 4 5f I o 4 0 III I l I I |.nI/|||.l l o l 9 7 a w r l Z\ /M 90 u /o f 5 4 u\ 7D 4. ,n G 7 Ar 6 4 ,zoJ lllllllllllll nl Sept- 8, 1953 H. v. scHwElTzER 2,651,282 EDGE-LINING MACHINE UNL OAD ATTORNEY of a preferred embodiment of a machine made according to this invention.

Fig. 2 is a front elevation of the machine shown in Fig. l, but showing the lining head lowered to a lining position.

Fig. 3 is a cross-section of the machine taken along the lines 3-3 of Eigs. 1 and 2.

Fig. 4 is a detailed front elevation of the lining head taken along the line 4-4 of Fig. 1.

Fig. 5 is a detailed section taken along the line 5-5 of Fig. 4.

Fig. 6 is a circular graph showing the cycle of operation of the machine and the relative timing of the operation of several elements during such a cycle. y

The machine shown in the drawings is comprised of a frame I0 having a base and table top I2, the frame I0 having suitable structural elements to support various elements and subassemblies of the machine, as will be described in detail below. The casing which normally encloses the frame is omitted in the drawings for purposes of illustration.

Spindle and Spindle drive A spindle drive shaft assembly 20, located forwardly in the frame I0 and mounted in suitable bearings, extends vertically from near the base through the top l2, where it supports a chuck 2|. The chuck 2| is comprised of chuck hub 22, a chuck ring plate 23 and a rubber suction cup 24 having a hollow stem connected to the hollow interior of the chuck hub. The spindle drive shaft assembly 20 is comprised of a tube 25 supporting the chuck hub 22 and asleeve 26 adjustably connecting the tube 25 to a tube 21 so that the height of the chuck 2| above the table top I2 may be adjusted as desired. The tube 21 passes through a hollow vacuum collar 28 (where the tube 21 is suitably ported) and is connected to the driven plate 3| of the clutch 30.

The driving plate 32 of the clutch 30 is slidably mounted on the solid clutch shaft 33 for movement in and out of engagement with the driven plate 3|. The clutch shaft 33 is driven by the Xed-speed spindle driving motor 35 through the geared speed-reducer 35, the speed-reducer 36 and clutch shaft 33 being connected by suitable drive such as the V-belt and pulley drive 34. The motor 35 is likewise connected to the speedreducer 3B by means of a V-belt driye, the motor 35 carrying the expansible V-belt pulley 31. The

motor is slidably and adjustably mounted on the base l0 .by means of the screw Shaft motor support 38 so that the hand wheel 39 will permit the distance between the motor 35 and the Yspeedreducer 36 to be varied, whereby the V-belt connecting the motor and speed-reducer will cause the effective diameter of the pulley 31 to expand or contract and. thus, permit the rotational speed ofthe clutch shaft 33 to be innitely varied within the limits permitted by the screw shaft motorl support 38 andthe expansible pulley 31.

Other means may beemploved to regulate the speed of the chuck 2|.-the disclosed meansbeing preferred since, by selection of the fixed reduction ratio of the geared speed-reducer 36 and the fixed speed of the motor` 35, it is possible to vary the speed of the chuck simply and to hold the adiusted speed constant, `in order that the peripheral speed of theware carried .by the chuck 2| may be controlled Within the limits of accurate speed variations of the lining roll |00, as explained below. It should be apparent that, for ware of small diameter, the speed of the spindle shaft 20 should be increased and, for ware of large diameter, the speed of the shaft 20 should be decreased so that the peripheral speed of the ware will remain within the operative limits of the lining roll |0.

Cam shaft drive Except for the adjustment of the rotational speed of the lining roll |Il|| of the lining head 80, all operations of the machine are controlled in timed relationship with each other by means of the cam shaft 40. The cam shaft 40 carries the various cams which operate the several subassemblies and is driven by means of a cam shaft motor 4| through an expansible pulley 42, V-belt 43, speed-reducer input shaft 44, geared speedreducer 45, speed-reducer output pulley 46, and cam shaft pulley 41. The cam shaft motor 4| is likewise mounted on a screw shaft base 43 so that, by turning the hand wheel 49, the speed of the speed-reducer input shaft 44 may be varied by operation of the expansible pulley 42.

Because all operations affecting the cycle of operation of the machine are controlled by the cam shaft 40, the length of each cycle is controlled by .adjusting the rotational speed of the input shaft 44 by means of the hand wheel 4e. Within the cycle of operation, the duration of each operation is controlled by the respective cam controlling such an operation. For simplicity of illustration, eaclh cam is shown as a fixed cam, and such xed cams are used in many production machines where the desired relative duration of each operation is established. It is to be understood, however, that for maximum flexibility of operation, each or any one of the cams on the shaft 40 may be a so-called split cam comprised of segments adjustable with respect to each other in order that the effective length of the cam face may be adjusted and, thus, that the duration of lany operation in the cycle and the timing of such operations with respect to each other may be adjusted.

Chuck vacuum Zine and operation In order to provide vacuum for operation of the ware chuck 2|, the speed-reducer input shaft 44 is extended through a suitable flexible coupling to a V-belt drive 5| which drives the vacuum pump 50. The pump is connected by a line 52 to a vacuum valve 53 opened and close-:l by a suitable cam follower operated by the vacuum cam 54. The vacuum valve 53 is connected by the line 55 to the hollow collar 23 in which the tube 21 is journaled. The journaled portion of the tube 21 is provided with suitable drilled ports opening to the interior of the spindle shaft 20.

The lip of the vacuum cap 24 normally extends above the chuck ring plate 23 a sunicient distance to engage the bottom of ware placed on the chuck so that the foot of the ware rests in the plate 23. Thus, when ware is placed on the chuck plate 23 and the vacuum valve 53 is opened by the cam 54, ware is held on the chuck 2| until the vacuum is released by the cam 54, the vacuum line running from the interior of the cup 24 through the spindle shaft 20, collar 28, line 55, vacuum valve 53, line 52 to the constantly operating pump 5U. I

Spindle clutch operation The clutch shaft 33 is constantly driven by the motor 35 through the above-described drive, but the spindle 2n and chuck 2| rotate only when the Lining roll drive, mounting, and operation In order to avoid appreciable skidding of the lining roll with the edge of the ware and ccnsequent smearing and wiping of the line, the lining roll is driven at a speed so that the lining surface of the roll |00 has a peripheral speed equal to the means peripheral speed of the edge of the ware. The lining roll |00 is accordingly driven, as best shown in Fig. 5, by a lining roll gear |0| meshing with the gear |03 of the transfer roll |02 which, in turn, is driven by the gear of the feed roll or drive roll |013. The pitch diameters of each of the gears is equal to the diameter of each of the rolls in order that the surface of the rolls will run in contact with each other while being driven by the gears. The feed roll |04 is mounted on the shaft |06 which, in turn, is driven by the geared variable-speed small motor |01 carried at the rear of the lining head 80. The current for the motor is supplied by the line |08 through the speed `control |00, most conveniently located at the front of the machine on the control panel 95 on which the starter buttons for the motor 35 and 4| are located. Diierent makes of such variable-speed small motors will have diierent speed ranges in which the speed control is accurate. Accordingly, the rotational speed on the chuck 2| shouldv be adjusted by operation of the hand wheel 39 to bring the peripheral speed of the ware on the chuck into the range in which the peripheral speed of the lining roll |00 may be accurately controlled by the motor |01. It is to be understood, however, that the motor |01 may be a fixed speed motor, synchronization of the peripheral speeds of the ware and lining roll |00 being obtained entirely by operation of the hand wheel 39, or, particularly if the machine is to be used for a relatively small range of ware sizesythe base 38 and pulley 31 may be eliminated to operate the spindle 2| at a constant speed, synchronization of peripheral speeds thus being obtained by control of the motor |01 above.

As best shown in Figs. 2 and 4, the lining roll |00 is suspended by a linkage capable of allowing the roll to float on the edge of the ware while the roll is positively driven. Such linkage oomprises the hangers ||0 rotatably mounted about the shaft |06 to support the shaft of the transfer roll |02. Pivoted on the shaft are the toggle arms |2 which carry the pivoted links ||3, the links ||3 carrying the shaft for the lining roll |00. The ends of the toggle arms opposite the links ||3 are joined by a bolt H4 normally held against the soft tubular sponge rubber bumper ||5 of the tube ||6 by the spring ||1 which is normally contracted within the tube I6. The tension on the spring I is adjustable by means of the wing nut I8 which bears against the upper end of the tube I1 and is threaded on the spring bolt H9. The lining roll |00 and its gear |0| are held in engagement with the transfer roll |02 and its gear |03, respectively, by lining roll tension springs |20 connected to the free ends of the links I3 and to the threaded tension rods |2| carried by the toggle arms ||2. A nut on each threaded tension rod allows the tension of the springs |20 to be suitably adjusted. In

Fig. 2 the rolls are shown in their normal position and in Fig. 4 ther'ollsarel shown in their position when the toggle arms ||2 are in their maximum toggled positions. The position of the lining roll |00 and tube ||1 with respect to the driving roll are shown for counter-clockwise rotation of the chuck 2| and clockwise rotation of the lining roll |00.

The face of the lining roll |00 is rubber, preferably rather soft, since the width of the applied line is controlled by the indentation which the edge of the ware makes in contacting the lining roll surface. To set the machine up for applying .a desired line, the tensions on the springs are set to apply a line of the desired width, a sample piece of the ware to be lined is centered on the chuck 2|, and then the head 80 is lowered until the pressure of the roll |00 on the ware opens ythe toggles ||2 to about half the full open position shown in Fig. 4 and also slightly opens the angle between the toggle arms ||2 and links 3 against the tension of the spring |20. The lining roll |00 is then floating on the edge of 4the ware under the tension of the springs |1 and |20. In this connection, it should be` pointed out that, while the teeth of the gears |0|, |03, and |05 are indicated diagrammatically in the drawings for simplicity of the illustration, they are, in practice, involute teeth which permit a variation of the distance between the centers ofthe gears |0| and |03.

With roll |00 floatingly mounted in the manner described above, the machine can accommodate any warping or variation in wall diameter in ware of a given size, as will occur in any ware which would pass any acceptable'production standards as well as any eccentricity which may occur in centering the ware on the chuck 2|. The principal variation which must be accommodated is warping of the rim, which variation will be accommodated by the'rocking of the roll |00 on the toggle arms ||2. VThe accommodation of the slight differencesin instant peripheral speed of the edge of the ware due to eccentricity of the ware, orwarping, scallops or iutes in the edge of the warev is also provided by the iloating mounting of the-lining roll |00. If the instant peripheral speed of the ware is slightly greater than thev instant peripheral speed of the roll |00, the roll |00 will tend-to be dragged along with the edge of the ware, closing up the toggle arm angle and closing upy the angle ci the link H3 with respect to the arms ||2. If the instant peripheral speed of the ware is slightly less than that of the roll |00, the roll |00 will tend to creep ahead along the advancing edge of the ware, closing the angle of the toggle arms i l2 and opening the angle of the links H3. It is because of the capability of the floating support of the lining roll |00 to accommodate variations in the instant peripheral speed of edges of the ware as well as to accommodate variations in the height of the edge with respect to the plane of the chuck plate 23 that my machine is 'able to line ware having a fluted or scalloped edge as well as ware having a perfectly circular edge. `The minimum radius of a ute or scallop whichmy machine may line is,` of course, determined by the radius of the roll |00, and the diameterof the roll |00 is selected accordingly. If there is a substantial variation in the instant peripheral speeds of. theware, as in the case `of very deep scallops or when the Ware is substantially square or has a similar polygonal shape of a relatively few number of sides, Athe;length of thevroll must be. increased .facsnzsa and, preferably, the rolls @are-gtaperedto aid in accommodating such wide .variations .in peripheral speed.

Color sappig and control The color for applicationby -the roll |00 -is supplied from the reservoir, which comprises -a cup |25 having a central tube` I26,'`port ed atits bottom to allow color, such as'gold,^l to 'run' into the tube, which extendsy -throughthe reservoir supporting plate |21 and from'wliich thevcolor is fed in drops onto the f eedroll |01* The amount of color whiehfis supplied from the cup |25 or, rather, the rate 'at-whichidrops' of color fall on the feed roll -Il4 iscontrolled by the length of the stroke 0f the plung'er `ro'dil'z'which moves in the vtube I 2 6.'""Tf lth'e istroke of the y'rod |28 is short, several -strokesf-maylbe required to pass one drop of color; if the stroke is long', several drops may pass -a-t onefstrokel* The rod |23 is actuated by an arm -"I30 which `is engaged between a shoulder on the'rodtZ fand a nut |29 on the threaded-end V`of the rodi -iThearm |30 vis lifted by a cam pin 3 I'v dwhich -rides on-a single lift cam |32 on thefeed roll shaft |05.' `Thuslthe arm |30 `islifted once for each revolution ofthe shaft |06 but A-thelefn'gi'fhlof Athe :stroke .ofthe rod I 28 is regulated-byth'eamountgof-lstmotion. adjustably permitted byethe turning nfl-the mut I .2 9 on the threaded end--foflftherod.1228. The rate of flow of color to :the lining roll |00 iis, therefore,

simply and easily controlled:bytheeadjustment of the nut |29 onfthe rod|28. f

As drops of color. falhon .the .iced rollrlfv, Ithey are carried -on lits `s'urfacexto..transfer roll 5.53.2- There the dropsLof colorspread .out into substantially uniform-films.` one .-beinglcarried, by t l ie feed roll I 04 and` the other-by; the r transferroll I QZ. The film onathe transfermoll IQ2 is .fthen- ,t ferred tothe lining ...rcll;,.|0 0, fr om wnich, of course, the coloris transferredtotheiedgeonthe ware at `the areasatwhchthe 811@ ith@ Ware contacts the. surface .oflthe l i;ngirollgtllt. Trice thickness of thef-lmtransferred from `the roll |00 Vto the ware is,-.eqntrglled bygtheyiscsity of the .color vehicle-.and the pressur between v the feed roll v| 04 andfthe-5transfergroll. 1 flheviscosity ofv thecolorfvehicle lh-,0f .C0l 1. rse,. v controlled `by the addition of, y andthe pressure b eenilhevrglls iisfadjusted by vvmeans of the nuts ,which., support the'ftra'nsf er roll shaft III onthehangersll. Whilethe lining roll |00 ,is edge of the ware, theroll' I 0 several -revolutionsfor each. volutionpf'the ware. When ware .with." al }true, circular edge is being lined, and thus. most `ommcnly, t h ejonly portion of the surface.oflthe Vvg .r 0.ll,| l|l transferring color to .the-Ware will ,be a, narrow band about the.,surface of the., roll .I00. 4`V Vllhilean integer of the bandofthelrolll which' contacts the ware .will nsuallyontactthetrf sier $0111.02 before the integeragaincontacts ,the edge of the itable thinner contact .with fille ofcourse; Kriek@ transferroii. |112, tie `1inef.jon tnewareiit'oiuldgnot cipal reasons. First due.to th fling amig-ma of snelcttothe toggle arms |Y I 2 ,i the liningryrplll Lug may not 1 .ing actual lining. Second,.evenassumirigfthat `traversed on that onerevolution of the Qandthin. AWith the knee action, theline would .not only tend to put but might well be in- ;terruptedandblotchy. In addition to these dif- :icultes .duringthe lining of ware of a given size and kind, most pieces will be quite uniform and, consequently, the area vof contact of the lining roll |Ui.Wi1l bearelatively narrow band. y While colorisbeing transferred from a relatively narrow band, the v celor on the remainingarea of the liningrolll yw ill tendto skin and build up to .thiekness whichwould render the color transfer mechanism inoperative.

vTo obviate Athe .above difficulties, I employ a spreaker roll |40a of a substantially'shorter length .than the lining rollvl|00f .The Spreader roll .|40 `is carried by the split-nut housing IAI which is ythe shaft |42 .by means of a split nut (not shown), which travels in 'the endless L42 is vcarried by arms |30 pivotally Vreverse pitched thread |33 in the shaft |152.l The shaft ,mounted on the feed roll shaft |05 so that the 'spreader roll 1|40 will always ride on the lining 'roll |00, regardlessjof theknee action of the link 1| I3 o r the toggling 0f the arms H2. .The shaft |32 is continuously driven by the pinion I 35 which meshes With the Ygear |05 4of the feed roll 10A. Thus, the spreader roll, rotated by frictional Contact with `the roll |00, is continually traversing the lining roll |00 and maintains a uniform lmofcolor o n the surface yof the .lining roll regardless of Whether the roll '|00 is `in actual lining contact with the ware or not. `lilven though, due to the knee action of the link H3, the lining roll |00yshou1d be out of contact with the transfer folli-02 during a substantialiportion of the actual lining period, the color on the whole vface of the roll |00 constitutes a sufficient reserferred tothe edge of the ware.

Summary of operations In View of the foregoing, the operationy of my lining machine may be summarized briefly as follows:

With speed of the spindle 20 and the lining roll |100 adjustedso that the peripheral speed of the ware to be'lined'will be equal to that of the roll |00, and with theheight and angle ofthe lining headadjusted s o that a line of the desired width will be placed at the desired position on the edge of the ware, the speedofthe cam shaft 40 is set for the desired timeof a .lining cycle. .There are two principal factors which determine this time. First, there must besuflicient time until the lining headV is raised (which time may include that for raising and lowering the head) for the operation to unload and load the ware. Second, the lining roll`|00 must .be in contact with the edge of the -warea 'sufficient length of time so warewill be vmade' during such contact. As indicated in Fig. 6, these two times are about equal, so that, in a two and one half second cycle, about asecond is requiredascisse 11 rate of about 120 dozen pieces of ware an hour for most ware.

In a given cycle, and with the machine adjusted for placing the desired line upon ware of a given size and shape, the cycle commences when the operator places the ware on the chuck 2| and against the centering plate 13 to effect a substantially geometric centering of the ware on the chuck, the plates 13 being in at this period of the cycle. The cam 54 thus opens the vacuum Valve 53, so that the vacuum cup 2li Will hold the ware on the ring plate 23 and shortly thereafter the spindle 20 commences to rotate, the clutch 3U having been engaged by operation of the clutch cam 6B. By the time the vacuum has turned on and the spindle commenced to rotate, the centering yoke 10 has been withdrawn,

Y by operation of the cam '15, to clear the ware, and

the lining head 80 has commenced to lower, by operation of the cam S2. Thus, by the time the centered ware held on the spindle has reached its speed of rotation, the lining roll lill) will contact the edge of the ware. On so much of the edge of the Ware as contacts the color on the lining roll |80, a line will be drawn by the color transferred from the roll IBB. The thickness and Width of the line will be uniform, as eX- plained above. The linkage by which the roll |00 is mounted will allow for warping and instant eccentricties of the edge of the ware contacted by the roll |80, as also explained above.

After the edge of the ware is lined, in rapid sequence the head 8B commences to raise, the spindle clutch 30 disengages, and as the chuck 2| stops rotation, the vacuum line is closed and the vacuum cup 24 releases the ware so that it may be removed from the chuck. By the time the lined ware is removed, the centering device is in again and the machine is ready to commence a new cycle.

From the foregoing it should be apparent that my machine accomplishes the various objects of the invention and also that it may be modied by those skilled in the art to accomplish the same ends or to meet special conditions of ware to be lined without departing from the spirit or scope of this invention. 'Ihis invention, therefore, is not limited to the preferred embodiment disclosed but by the appended claims.

What is claimed is:

1. In a machine for lining the edge of ceramic dishware and the like, a vacuum chuck cornprising a ware support and a vacuum cup adapted to engage ware placed on said support, a hollow spindle carrying said chuck, the interior of said spindle communicating with the interior of said vacuum cup, a source of vacuum, a line connecting said source to the interior of said spindle, and a valve interposed between said source and said cup to control the operation of said cup in holding and releasing ware placed on said ware support; a clutch, a variable speed rst drive means connected to said spindle through said clutch; a centering device adjacent said chuck and comprising adjustably spaced members and means to move said adjustable spaced members toward and away from a position where said members are adjusted to center, on said chuck, ware placed in contact with said members; a lining head mounted adjacent said chuck and comprising a color-carrying, resiliently-surfaced lining roll having an axial length greater than the width of the line to be inscribed, a driving feed roll, and an intermediate transfer roll in rolling contact with said 'drive roll, secondr positive drive means for'sa'id driving feed roll to drive said lining roll through said transfer roll, means for resiliently supporting said lining roll` to permit angular and radial movement of said lining roll with respect to said transfer roll and urging said lining roll toward rolling contact with said transfer roll, means to supply color to said driving feed roll at a substantially continuous rate, whereby said color is supplied to said lining roll when said transfer roll is in contact therewith, means to regulate the rate at which color is supplied to said driving feed roll, adjustable means to support said lining head so that said lining roll will engage the edge of ware carried by and centered on said chuck; means to drive said driving feed roll so that the peripheral speed of said lining roll is substantially Yequal to the peripheral speed of the ware, and means continuously distributing the color on said lining roll; and means to move said lining head in and out of engagement with ware on said chuck, engage and disengage said chuck, operate said vacuum valve, and operate said centering device in timed relationship with respect to each other during a cycle of operation.

2. In a ware decorating machine, a lining head for applying a line of color to the edge of rotated ware comprising a drive roll, means to drive said drive roll, a transfer roll in rolling contact with said drive roll and continuousliT driven thereby, a lining roll having an axial length greater than the width of the line to be inscribed and having a resilient surface and continuously driven by said transfer roll, means for mounting said lining roll to permit limited angular and radial movement of said lining roll with respect to said transfer roll and resiliently urging said lining roll into rolling contact with said transfer roll, whereby color supplied to said driving roll will be transferred and supplied in a film to said lining roll when said drive, transfer, and lining rolls are, seriatim, in rolling contact, means to supply color to said driving roll, means to regulate the rate at which color is supplied to said driving roll, means to distribute the color on said lining roll, said lining roll mounting means comprising a pivotally mounted toggle arm and a link pivoted to said toggle arm, said link carrying said lining roll, springs acting upon said arm and link to urge said lining roll in contact With said transfer roll, said means to supply color to said roll comprising a reservoir and conduit therefrom to said driving roll, and said means to regulate the rate at which the color is supplied to said driving roll comprising a variable stroke piston interposed in the conduit from said reservoir to said driving roll, a member reciprocated by said means for driving said driving roll, a lost motion linkage connecting said member to said piston, and means to vary the lost motion in said linkage to vary the stroke of said piston.

3. In a ware decorating machine of the class described, a ware-holding chuck, a lining head comprising a roll to scribe a line on the edge of ware carried by said chuck, said roll having an axial length greater than the width of the line to be inscribed, means controlling the operation of said chuck to enable ware to be held on said chuck and to be released therefrom, means to move said lining head from an operative ware edge-lining position to an inoperative position, and means controlling the operation of said chu-ck operating means and said lining head for, the chuck operating cam -having a longer.

operative lcam face than fsaid lining head movement cam, the lining head movement cam being indexed on said cam shaft so kthat it "will be in an operative .position only while said chuck operating cam is in an operativefposition.

4. In a 'ware decorating machine of the class described, 'a ware-holding chuck, a lining head comprising a roll to scribe a line on the edge of Ware carried by said chuck, said roll having an axial length greater than the width of the line to be inscribed, means controlling the operation of said chuck to enable Ware to be held on said chuck and to be released therefrom, means to move said lining head from an operative ware edge-lining position to an inoperative position, `and means controlling the operation of said chuck operating means and said lining head moving means to effect operation of said chuck at all times while said lining head is in its operative edge-lining position, a spindle, a spindle drive, and means to control the connection of said spindle to its drive prior to placement of said lining head in its operative edge-lining position but after operation said chuck to hold ware and the disconnection of said spindle from its drive after the lining head has commenced to move from its edge-lining position but prior to operation of the chuck to release ware therefrom, said Icontrol means comprising a common cam shaft and chuck-operation, lining head movement `and spindle operation cams mounted on said cam shaft, the same cams being indexed and having operative cam faces of lengths to effect, seriatim, operation of said chuck to hold Ware, connection of said spindle to its drive, placement of said lining head in its edge-lining position, commencement of movement of said lining head from its lining position, disconnection of said spindle from its drive, and operation of said chuck to release ware.

5. In a ware decorating machine of the class described, a ware-holding chuck, a lining head comprising a roll to scribe va line on the edge of ware carried by said chuck, said roll having an axial length greater than the width of the line to be inscribed, means -controlling the operation of said -chuck to enable Ware to be held on said chuck and to be released therefrom, means to move said lining head from an operative ware edge-lining position to an inoperative position, and means controlling the operation of said chuck operating means and said lining head moving means to effect operation of said chuck at all times while said lining head is in its operative edge-lining position, `a spindle, a spindle drive, and means to contro1 the connection of said spindle to its drive prior to placement of said lining head in its operative edge-lining position 'but after operation said chuck to hold ware and the dis-connection of said spindle from its drive after the lining head has commenced to move from its edge-lining position but prior to operation of the chuck to release ware therefrom, 'a centering device movable toward and away from a position to center Ware on said chuck, and means to control the placement of said centering device at its ware-centeringr pdesfase l eT4 sit-ien 'only Lwhile said rspinue `is discs-financed from its drive. 4 y

'6. Ina ware decorating :machine of "the 'class described, a `ware-holding chuck, V"a lining head ccmprisingla vroll to scribe aline -on the `-edge 4of ware carried by said chuck, said roll having an laxial 4length'greater than ythe width vof "theline to `be inscribed, means controlling the operation of said ychuck to enable Ware to beheld on said chuck and to :be released therefrom, means'to move said lining head from an operative ware edge-lining position to an inoperative position, and 'niea'ns controlling the operation of said chuck operating means and said lining head moving means to effect operation of said chuck at all times while said lining head is in its operative edge-ling position, a spindle, a spindle drive, and means to control the Iconnection of said spindle to its drive prior to placement of said lining head in its operative edge-lining position but after operation of said chuck to hold ware and the disconnection of said spindle from its drive after the lining head has commenced to move from its edge-ling position but prior to operation of the chuck to release ware therefrom, a centering device movable toward and away from a position to center ware on said chuck, Iand means to control the placement of said centering device at its ware-centering position only while said spindle is disconnected from its drive, said control means comprising a common cam shaft and chuck, lining head, spindle, and centering device operating cams, said cams being indexed on said cam shaft and having operative cam faces of lengths to eiect, seriatim, the operation of said chuck to hold ware, connection of said spindle to its drive, placement of said lining head in its edge-lining position, commencement of movement of said lining head from its edge-lining position, disconnection of said spindle from its drive, and operation of said chuck to release ware and placement of said centering device in its centering position only while Isaid spindle is disconnected from its drive.

7. In a machine for lining the edge of dishware and the like, a chuck; a rst drive means for said chuck; -a lining head comprising a color-carrying lining roll having an axial length greater than the width of the line to be inscribed and adapted to contact the edge of ware carried by said chuck, means to support said roll in ilcating contact with such ware, second positive drive means to drive said roll continuously and positively during such contact, and means to supply color to said roll, and means to distribute said color over said roll while said roll is in such contact, means to support said lining head adjacent said chuck, means to Vary the radial distance between said chuck and said lining roll, means to vary the vertical height of said lining roll with respect to said chuck, and means to vary the angle at which said lining roll contacts the edge of ware carried by said chuck, whereby the machine may be set to line ware of varying sizes and the location of the line on the edge of the Ware may be varied; and means to equalize the peripheral speed of said lining rool and the average peripheral speed of ware of a given size carried by` said chuck, a vacuum cup carried by said chuck and adapted to engage ware placed therein, `a source of vacuum, a line from said source of vacuum communicating with the interior of said vacuum cup, and a valve in said vacuum line to open said line from said vacuum cup to said source, whereby ware placed in said ychuck will be held thereon, and t0 Yclose said line, .whereby said Ware will be released, References Cited in the file of this patent means to center said lware on said chuck, means UNITED STATES PATENTS 1.10 raise said lining heacl from a positonccntact- Number Name Date mg Ware canned by sald chuck to a poslt'lon out 5 290,329 Homan Dea 18, 1883 of conact wxtn the Ware, and means t o tune the 1530292 Beim Mar. 17, 1925 operatlcn of sald Vacnum valve, centermg means, 1,555,389 Stevens Sept. 29, 1925 and hnmg head raxslng rneans durlng a cycle of 1,729,811 Anderson O55 1 1929 oneratlon to 1oWe1 Q sald hrung head xnto contact 1,849,540 E Cosgrove Man 15, 1932 wlth the Ware whe @he vacuum 1 1ne 1s. open and 10 2,030,325 Shehan F65 11J 1936 to center ware o n salq chuck whlle sald head 1s 2,062,425 Peters Dm L 1936 out of contact Wlth sald Ware. 2,196,094 Bennett et aL ADL 2, 1940 2,203,572 Johnson June 4, 1940 HOWARD V. SCHWE'ITZER. 2,369,378 Thiele et a1. Feb. 13, 1945 

